2618 is a kind of heat-treatable and reinforced heat-resistant deformation aluminum alloy with working temperature up to 250℃.
2618 Aluminum plate forgings can be used to manufacture stress-bearing structural parts of supersonic aircraft under 150 ℃ for a long time, such as fuselage and wing skin frame, tail fin; low-speed aircraft parts and components operating at temperatures not higher than 150℃; and parts not higher than 250 C. Jet engine parts.
2618 alloy has high plasticity in hot state and can be rolled into thin and thick plates, and extruded into bars and profiles.
2618 aluminum Free forging and die forging are carried out at 350-450 ℃. Forging is easy to deform on forging hammer and hydraulic press.
The melting temperature of type 2618 alloy is 720~760 ℃. The solid solution treatment temperature of 2618 alloy die forgings in T61 state is between 505 -515 ℃.
2618-T851 aluminum plate alloy material has high corrosion resistance, but still has the tendency of intergranular corrosion and exfoliation corrosion. Aluminum clad sheet has relatively high corrosion resistance. The surface treatment performance of the alloy is general, and the machinability and grinding performance are good.
